Figure 1 Physiological parameters of P.
massoniana seedlings cultivated at various calcium levels . (A)
Photographs of plant leaves. (B) Total chlorophyll content. (C) Net
photosynthetic rate (Pn). (D) Leaf Ca content. (E) Seedling aerial part
dry weight. (F) Soluble protein content. (G) Hydrogen peroxide
(H2O2) content. (H) Total APX activity.
(I) Total SOD activity. Data are indicated as means ± SE from six
replicates.